package cn.ecut.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Date;

/**
 * @Author ruanxin
 */
//中文数据传递
public class CookieDemo03 extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        //解决中文乱码问题
        resp.setCharacterEncoding("GBK");
        req.setCharacterEncoding("GBK");
        //Cookie，从服务端获取
        Cookie[] cookies = req.getCookies();

        PrintWriter out = resp.getWriter();
        //判断cookie是否存在
        if (cookies != null) {
            //如果存在
            out.write("你上一次访问的时间是:");
            for (int i = 0; i < cookies.length; i++) {
                Cookie cookie = cookies[i];
                if ("name".equals(cookie.getName())){
                    //获取Cookie中的值
                   // System.out.println(cookie.getValue());
                   //解码
                    out.write(URLDecoder.decode(cookie.getValue(),"utf-8"));
                }
            }
        } else {
            out.write("这是您第一次访问");
        }

        //编码
        Cookie cookie = new Cookie("name", URLEncoder.encode("阮欣","utf-8"));
        resp.addCookie(cookie);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
